• Search Research Projects
  • Search Researchers
  • How to Use
  1. Back to previous page

Pattern Dynamics Simulation of Boiling Two-phase Flow Dynamics

Research Project

Project/Area Number 19360104
Research Category

Grant-in-Aid for Scientific Research (B)

Allocation TypeSingle-year Grants
Section一般
Research Field Thermal engineering
Research InstitutionKansai University

Principal Investigator

OZAWA Mamoru  Kansai University, システム理工学部, 教授 (60112009)

Co-Investigator(Kenkyū-buntansha) UMEKAWA Hisashi  関西大学, システム理工学部, 准教授 (10232894)
Project Period (FY) 2007 – 2008
Project Status Completed (Fiscal Year 2008)
Budget Amount *help
¥14,300,000 (Direct Cost: ¥11,000,000、Indirect Cost: ¥3,300,000)
Fiscal Year 2008: ¥4,160,000 (Direct Cost: ¥3,200,000、Indirect Cost: ¥960,000)
Fiscal Year 2007: ¥10,140,000 (Direct Cost: ¥7,800,000、Indirect Cost: ¥2,340,000)
Keywords熱・物質移動 / 気液二相流 / 離散気泡モデル / 流動様式 / 気泡離散モデル / 二相流ダイナミックス / サブクールバーンアウト / 定電流法 / 熱工学 / モデル化 / 原子力エネルギー / 二相流 / 沸騰熱伝達
Research Abstract

ボイド伝播方程式を基礎式とする離散気泡モデルを発展させ, 垂直上昇流におけるボイド率の時間変動挙動を定常流ならびに流動脈動下に対して数値的に再現するとともに, 同モデルの水平流への拡張を実施した. また, この計算結果を管内径2.0, 3.0mmの水平ミリチャンネル内の作動圧力5.0, 6.5 MPaのCO_2で得られた実験結果と比較し, 従来提案させている流動様式線図よりもよく実験結果を表現でき, 特に管頂部のドライアウトが問題となるSlug-Annular flowを含むIntermittent領域の存在を上手く再現できることを示した.

Report

(3 results)
  • 2008 Annual Research Report   Final Research Report ( PDF )
  • 2007 Annual Research Report
  • Research Products

    (13 results)

All 2009 2008 2007

All Journal Article (2 results) (of which Peer Reviewed: 2 results) Presentation (11 results)

  • [Journal Article] Flow pattern and boiling heat transfer of CO2 in horizontal small-bore tubes2009

    • Author(s)
      M. Ozawa, T. Ami, I. Ishihara, H. Umekawa, R. Matsumoto, Y. Tanaka, T. Yamamoto and Y. Ueda
    • Journal Title

      International Journal of Multiphase Flow (印刷中)

    • Related Report
      2008 Final Research Report
    • Peer Reviewed
  • [Journal Article] Flow pattern and boiling heat transfer of CO2 in horizontal small-bore tubes2009

    • Author(s)
      M. Ozawa, T. Ami, I. Ishihara, H. Umekawa, R. Matsumoto, Y. Tanaka, T. Yamamoto, Y. Ueda
    • Journal Title

      International Journal of Multiphase Flow (印刷中)

    • Related Report
      2008 Annual Research Report
    • Peer Reviewed
  • [Presentation] Flow Pattern and Boiling Heat Transfer of CO2 in Horizontal Small-Bore Tubes2009

    • Author(s)
      M. Ozawa, T. Ami, I. Ishihara, H. Umekawa, R. Matsumoto, Y. Tanaka, T. Yamamoto, Y. Ueda
    • Organizer
      US-Japan Seminar on Two-Phase Flow Dynamics
    • Place of Presentation
      Santa Monica, U.S.A.
    • Year and Date
      2009-09-16
    • Related Report
      2008 Final Research Report
  • [Presentation] 連続するスラグ気泡の相互干渉2009

    • Author(s)
      中村典子, 大藪明久, 網健行, 梅川尚嗣,小澤守
    • Organizer
      日本機械学会関西支部 学生員卒業研究発表講演会
    • Place of Presentation
      近畿大学
    • Year and Date
      2009-03-15
    • Related Report
      2008 Final Research Report
  • [Presentation] 連続するスラグ気泡の相互干渉2009

    • Author(s)
      中村典子, 大藪明久, 網健行, 梅川尚嗣, 小澤守
    • Organizer
      日本機械学会関西支部学生員卒業研究発表講演会
    • Place of Presentation
      近畿大学
    • Related Report
      2008 Annual Research Report
  • [Presentation] Flow Boiling of Carbon Dioxide in Horizontal Mini-channel and Pattern Dynamics approach to study flow pattern2009

    • Author(s)
      M. Ozawa
    • Organizer
      7th International ASME Conference on Nanochannels, Microchannels and Minichannels
    • Place of Presentation
      POSTECH-Pohang University of Science and Technology, Pohang, Korea
    • Related Report
      2008 Annual Research Report
  • [Presentation] Flow Pattern Prediction of CO2 at High Pressure by Discrete Bubble Model2009

    • Author(s)
      T. Ami, H. Umekawa, M. 0zawa, M. Shoji
    • Organizer
      7th World Conference on Experimental Heat Transfer, Fluid Mechanics and Thermodynamics
    • Place of Presentation
      Jagiellonian Uniersity's Auditorium Maximum Krakow, Poland
    • Related Report
      2008 Annual Research Report
  • [Presentation] Application of Discrete Bubble Model to Boiling Two-Phase Flow2008

    • Author(s)
      T. Ami, H. Umekawa, M. Ozawa and M. Shoji
    • Organizer
      7th JSME-KSME Thermal and Fluids Engineering Conference
    • Place of Presentation
      Sapporo, Japan
    • Year and Date
      2008-10-15
    • Related Report
      2008 Final Research Report
  • [Presentation] An Application of Discrete Bubble Model to Horizontal Two-Phase Flow2008

    • Author(s)
      T. Ami, H. Umekawa, M. Ozawa, M. Shoji
    • Organizer
      2nd International Forum on Heat Transfer (IFHT-2008)
    • Place of Presentation
      Tokyo, JAPAN
    • Year and Date
      2008-09-17
    • Related Report
      2008 Final Research Report
  • [Presentation] Flow Pattern and Boiling Heat Transfer of CO2 in Horizontal Small-Bore Tubes2008

    • Author(s)
      M. Ozawa, T. Ami, I. Ishihara, H. Umekawa, R. Matsumoto, Y. Tanaka, T. Yamamoto, Y. Ueda
    • Organizer
      US-Japan Seminar on Two-Phase Flow Dynamics
    • Place of Presentation
      Lowes Santa Monica Beach Hotel, Santa Monica, U. S. A
    • Related Report
      2008 Annual Research Report
  • [Presentation] An Application of Discrete Bubble Model to Horizontal Two-Phase Flow2008

    • Author(s)
      T. Ami, H. Umekawa, M. Ozawa, M. Shoji
    • Organizer
      2nd International Forum on Heat Transfer (IFHT-2008)
    • Place of Presentation
      Convention Hall. lstitute of Industrial Science, in the Komaba Research Campus of the University of Tokyo, Tokyo, JAPAN
    • Related Report
      2008 Annual Research Report
  • [Presentation] Application of Discrete Bubble Model to Boiling Two-Phase Flow2008

    • Author(s)
      T. Ami, H. Umekawa, M. Ozawa, M. Shoji
    • Organizer
      7th JSME-KSME Thermal and Fluids Engineering Conference
    • Place of Presentation
      Hokkadio Citizens Actibites Center, Sapporo, Japan
    • Related Report
      2008 Annual Research Report
  • [Presentation] 離散気泡モデルの沸騰工層流への適用2007

    • Author(s)
      網・梅川・小澤・庄司
    • Organizer
      日本機械学会熱工学コンファレンス2007
    • Place of Presentation
      京都大学工学部
    • Year and Date
      2007-11-23
    • Related Report
      2007 Annual Research Report

URL: 

Published: 2007-04-01   Modified: 2016-04-21  

Information User Guide FAQ News Terms of Use Attribution of KAKENHI

Powered by NII kakenhi